150 



VEGETATION OF THE PEAK DISTRICT 



[CH. 



Holcus lauatus 



Molinia caerulea 



Glyceria fluitans 



Scirpus setaceiis 



Eriophorum angustifolmm 



Carex ovalis 



C. echinata 



C. paniculata 



C. Goodenoughii 



C. flacca 



C. pallescens 



C. panicea 



C. pendula 



"C. strigosa" 



C. helodes 



( = C. laevigata) 

 C. binervis 

 C. fulva 

 C. flava 



forma oedocarpa 



( = C. flava var. minor) 







I 

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1 



I 

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a 



vr 



I 



o 



vr 



o 



vr 



vr 



la 



o 



r 

 la 



la 



C. ampuUacea 

 Juncus effusus 



forma compactus 

 J. inflexus 



( = J. glaucus) 

 J. sylvaticus 



( = .J. acutiflorus) 

 J. lamprocarpus 

 J. supinus 



squarrosus 



Luzula '/nultiflora 

 forma congesta 

 Narthecium Ossifragum 

 Iris Pseudacorus 

 Orchis latifolia 

 O. maculata 

 0. ericetorum 



Ir 



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la 

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Ir 

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 1 



Calcareous Waters 



The composition of the calcareous waters may be inferred 

 from the following analyses of the waters of the Carboniferous 

 Limestone area of the mid-Pennines published by Mr Burrell 

 (1900). It will be seen that the iron-content is practically the 

 same as that of the non-calcareous waters, but that the lime- 

 content is considerably higher. The magnesium-content is also 

 high ; and this fact has possibly some significance. It seems to 

 be the case generally, although perhaps not so universally, that 

 natural waters with a high lime-content have also a high general 

 mineral-content, and conversely that Avaters with a low lime- 

 content have also a low general mineral-content ; and it is by 

 no means improbable that the so-called lime-loving species are 

 plants which prefer, not merely the lime, but the high mineral- 

 content in general. However, in the absence of experimental 

 work bearing specially on this point, no positive statements can 

 be made; though Graebner (1909) bases a classification of the 

 vegetation of Germany on an assumption, by no means an 

 unreasonable one, which is nearly the same as this one. 



